Title:
【発明の名称】多重管を曲げる方法
Document Type and Number:
Japanese Patent JP2566049
Kind Code:
B2
Abstract:
In the bending in a bending plane of a multiple tube (6) having a plurality of compartments (7,8) extending side-by-side in the longitudinal direction of the tube, a bending location is moved progressively along the tube and during bending a mandrel (12,13) is located inside each said compartment at the bending location. To improve control of the tube shape, during at least part of the bending the position of at least one of the mandrels (12,13) relative to the tube at the bending location varies in dependence on at least one parameter of the bending. At least one of said mandrels (12,13) may be free to move, under constraint by a resilient force, in the longitudinal direction of the tube.
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| WO/2010/017336 | IMPROVED METHOD FOR MANUFACTURING A BENT HEAT EXCHANGER |
Inventors:
HERUMANUSU GERUHARUDOSU GUROBENHAARU
Application Number:
JP17544890A
Publication Date:
December 25, 1996
Filing Date:
July 04, 1990
Export Citation:
Assignee:
GURAN PURI SAIRENSAAZU BV
International Classes:
B21D9/04; B21D9/05; B21D9/00; B21D9/07; (IPC1-7): B21D9/00; B21D9/05
Domestic Patent References:
| JP60118331A | ||||
| JP61195813U |
Attorney, Agent or Firm:
Heiyoshi Odashima